@misc{indiciae27d2c7b8eec2,
  title = {Geologic map of the Sulphur Well quadrangle, Metcalfe and Green Counties, Kentucky},
  author = {John Mark Cattermole},
  year = {1966},
  doi = {10.3133/gq555},
  url = {https://pubs.usgs.gov/publication/gq555},
  note = {Source identifier: gq555}
}